How important is the following in purchasing a laptop that will be used for image editing:
processor speed
amount of RAM
integrated vs. dedicated graphics card
HD speed (SSD; or 5400/7200/10000 rpm)
...

I'm doing research on a camera bag. I'm looking for a small book bag to carry my d70 with 18-70 attached, a 70-300, my 8-16, and MacBook pro. I'm interested in finding a camera bag that can also hold ...